a) 3[tex] \frac{5}{2} [/tex]
b) 5:[tex] \frac{3}{4} [/tex]
c) 8:[tex] \frac{1}{2} [/text]


Răspuns :

à)( 3×2+5)/2=11/2=5,5
b)5×4/3=20/3=6,(6)
c)8:1/2=8×2/1=16

[tex]\it 5:\dfrac{3}{4} = \dfrac{5}{1}\cdot\dfrac{4}{3} =\dfrac{20}{3} \\\;\\ 8:\dfrac{1}{2} = \dfrac{8}{1}\cdot\dfrac{2}{1}=\dfrac{16}{1}=16[/tex]